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Ok let's run with that.


Final biasing example with R2 in the EN369FN at 100k ohms

First we calculate the current:

current total = transmit line voltage / (RV11 midpoint + R239 + [our new R2 of the EN369FN]) =

So current total = 7.4 / (10000 + 10000 + 100000) = 7.4 / 120000 = 0.00000616A or 6.16 uA (Micro amps)


Now we can calculate the voltage across the EN-369FN

bias voltage across the EN36FN = current total x [our new R2 of the EN369FN]

So bias voltage = 0.00000616 x 100000 = 6.16 volts


6.16 volts. :blink: :huh: Are you sure you want to run with that? Hope you have some spare Mosfets handy.


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